We need a celestial Sherlock Holmes on the Case of the Missing Clouds. Saturn's massive moon Titan lost its northern cloud cover from around 2010 to 2014. NASA's Cassini spacecraft has been keeping an eye out for fresh cloud activity on Titan. NASA released an image Tuesday showing wispy clouds hovering over the moon's hydrocarbon lakes.

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According to NASA, "Cassini scientists noted a decrease in clouds everywhere on Titan after a large storm in 2010, and expected clouds to return sooner, based on computer models of Titan's atmosphere." NASA previously posted a video showing the thin methane clouds in motion.

Cassini snapped the image in late October 2016. Scientists had expected more clouds by now and are looking at possible connections between the moon's cloud formations and the changing seasons as Titan moves through its version of summer.